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Securities - Certain Corporate and Strategic Investments (Details) (USD $)
Share data in Billions, unless otherwise specified |
3 Months Ended | ||||
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Sep. 30, 2013
First Data Corporation [Member]
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Dec. 31, 2012
First Data Corporation [Member]
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Sep. 30, 2013
China Construction Bank [Member]
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Sep. 30, 2013
Common Stock [Member]
China Construction Bank [Member]
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Dec. 31, 2012
Common Stock [Member]
China Construction Bank [Member]
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| Cost Method Investments [Abstract] | |||||
| Investment Owned, Balance, Shares | 2.0 | ||||
| Gain (Loss) on Sale of Investments | $ 753,000,000 | ||||
| Cost method investment ownership percentage | 1.00% | ||||
| Equity Method Investments and Joint Ventures [Abstract] | |||||
| Equity Method Investment, Ownership Percentage | 49.00% | ||||
| Equity Method Investments | $ 3,200,000,000 | $ 3,300,000,000 |
| X | ||||||||||
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- Definition
Cost method investment ownership percentage. No definition available.
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- Details
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| X | ||||||||||
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- Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Balance held at close of period in number of shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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